## Mock CCC '18 Contest 2 J4/S2 - A Geometry Problem

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Points: 7 (partial)
Time limit: 1.0s
Memory limit: 1G

Problem type

You are given three rectangles. Determine if it is possible to arrange the three rectangles, perhaps with rotation, to form a square without the rectangles overlapping.

#### Constraints

The lengths and widths of the rectangles are positive integers between and .

#### Input Specification

The input consists of three lines. Each of the three lines contains two positive integers, the length and width of one of the rectangles.

#### Output Specification

Print, on a single line, YES if it is possible to form a square.

Print, on a single line, NO otherwise.

#### Sample Input

8 2
1 6
7 6

#### Sample Output

YES